Unprecedented June Temperatures on the Antarctic Peninsula
A new all-time high temperature for June was reported on the Antarctic Peninsula, with data released on June 12 at 19:01. Argentina's Esperanza Base recorded 15.4°C, beating the previous June record of 13.3°C set in 1998. For context, the average June temperature at Esperanza Base is -6.2°C. Other Argentine research stations, including Marambio and San Martín, also logged record-breaking temperatures between June 5 and 6.
- At Marambio Base, the thermometer hit 11.8°C, surpassing the prior high of 9.2°C; the average June temperature there is -10.7°C.
- San Martín Base recorded 9.4°C, exceeding the old record of 7.8°C, against a June average of -5.6°C.
What Is Driving This Extreme Heat?
Climate experts attribute this unusual warmth to a mix of factors, including climate change. José Luis Stella, a climatologist with Argentina's National Meteorological Service, commented:
“This reading is highly unusual for this time of year.” — José Luis Stella
Professor Raúl Cordero from the University of Groningen stressed that “it confirms the trend” and that “such events will become more frequent.”
Thomas Caton Harrison, a polar climatologist at the British Antarctic Survey, noted that “there is credible evidence that climate change plays a role, but its impact in this region is complex.” He also highlighted the “astonishingly high amount of precipitation falling as rain rather than snow,” which creates challenges for researchers on Antarctic bases because “there is a lot of liquid rainwater, leading to runoff and ice formation.” Cordero added that “large areas in the far north of the white continent remained snow-free.”
A study examining these changes was published in the journal Nature Geoscience, conducted by scientists from the IBS Center for Climate Physics at Pusan National University in South Korea.
These record temperatures on the Antarctic Peninsula signal serious shifts in the region’s climate system, with potential far-reaching consequences for ecosystems and the global climate. Scientists warn that such anomalies may become the new normal due to global warming, raising alarm among researchers. Ongoing monitoring and further investigation of these changes are critical to understanding how the climate crisis is affecting Earth’s most remote areas.
The rising temperatures in Antarctica are not isolated events; similar trends have been observed across the globe. For instance, London recently experienced its hottest May Day on record, highlighting the widespread impact of climate change. These instances of extreme heat underscore the urgent need to address the environmental challenges we face today.